I know you do not think that any harm is done by copying the artwork of others but that is not true. Many artists have stopped sharing their artwork because of people copying from them without permission or proper credit. You may wind up being one of the reasons another artist who takes the time to come up with their own compositions removes their artistic presence from the internet if you keep copying like you do. Do you really want to be one of the factors as to why an artist stops sharing their art and maybe gives up on it all together?